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Import Maps and Built In Modules in JavaScript Runtimes

Import maps provide instructions to JavaScript runtimes on how to load modules, offering a more direct and explicit approach compared to Node's resolution process.
By defining mappings in an import map inside HTML, browsers can understand and rewrite bare specifiers to valid URLs before initiating fetch requests.
Import maps allow mapping multiple names and support scoped overrides to manage module versions in different parts of the codebase.
They do not mix well with dynamic import() unless all specifiers are covered by the map, and caching may require query params for file changes.
Built-in modules in JavaScript runtimes like Node and Deno eliminate the need for bundlers and loaders, with Deno using stable URLs for imports and managing caching internally.
Node's built-in modules like fs, path, and http are part of the core runtime, while Deno offers a minimal runtime with modules loaded from stable URLs.
Deno's strict module loading behavior requires explicit imports for both local files and remote resources, improving predictability across projects.
Deno caches modules based on their full URLs, ensuring that even small changes trigger separate cache entries and enabling easy updates by changing the URL.
Importing modules in Deno directly points to the source, eliminating the need for dependency managers or node_modules folders and providing a self-contained project.
Projects in Deno are explicit, direct, and organized without hidden dependency graphs, offering bundling and compilation features for packaging projects without additional dependencies.

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Dev

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Asp.Net Core app with Dynamic Modular Monolith Architecture

The author shares their experience of considering developing a financial management app over the weekend to monitor expenses and make decisions.
Having 13 years of industry experience, the author emphasizes the importance of discussions and communication in problem-solving for real growth.
The author decided to develop an ASP.NET Core web application using .NET 9 with a focus on a Dynamic Modular Monolith Architecture to build features as self-contained modules.
The post serves as an introduction to a series of posts about developing an ASP.NET Core app with Dynamic Modular Monolith Architecture, aiming to share insights with a wider audience.

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Dev

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Everyone now can create profitable business with AI

The world of software development is evolving with the rise of generative AI and low-code platforms, leading to a new style of working known as “vibe coding” where AI assistants and UIs accelerate project development.
Vibe Planner, an AI-powered platform, addresses the challenges of scattered requirements, context-switching, and uncertain roadmaps faced by vibe coders, enhancing planning, organization, and project execution.
Developed by Martin Tonev, Vibe Planner leverages AI to transform prompts into project plans, enabling users to generate blueprints, break down tasks, integrate tools, visualize progress, and optimize sprints.
Vibe Planner follows a workflow from describing feature sets in plain English to refining tasks, syncing with repositories, automating updates, and providing AI insights for retrospectives, enhancing productivity and collaboration.
Under the hood, Vibe Planner combines natural-language understanding, code analysis, task modeling, extensible plugins, and real-time collaboration to streamline the planning process for vibe coders.
Real-world impact shows significant time reductions in project setup, fewer missed deadlines, and improved alignment between technical and non-technical stakeholders using Vibe Planner.
Vibe Planner matters for vibe coders as it automates planning overhead, ensures accountability with data-driven timelines, bridges experimentation with delivery, and scales to accommodate solo projects and teams.
It empowers developers and product teams to maintain creative momentum while staying focused on project goals, providing a platform to streamline planning and execution in an AI-augmented environment.
Experience the benefits of Vibe Planner by trying out the platform to transform vibe-coding sessions into goal-oriented sprints, offering a predictable and efficient approach to project planning and development.

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Medium

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How I Turbocharged My Spring Boot App for Maximum Performance

The author started by profiling and benchmarking the Spring Boot app to identify bottlenecks using tools like Spring Boot Actuator, wrk, JMeter, JProfiler, YourKit, and VisualVM.
Optimizations included lazy initialization to reduce startup time, trimming auto-configuration bloat, tuning JDBC pool, adding indexes in the database, utilizing caching, implementing @Async and virtual threads for scalability, enabling GZIP compression, optimizing logging, and tweaking JVM settings.
Tools like JProfiler, YourKit, VisualVM, Spring Boot Actuator, Micrometer, Prometheus, Grafana, Zipkin, and Elastic APM were crucial for real-time monitoring and performance improvements.
These optimizations resulted in a 3x throughput increase, significant latency reduction, improved memory management, and the ability to handle twice the traffic efficiently, showcasing a remarkable transformation in the app's performance.

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Dev

268

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AI Isn’t Replacing Developers — It’s Making Them Irreplaceable

Developers are not being replaced by AI but rather supercharged with tools like GitHub Copilot and ChatGPT.
Adaptation is the developer's superpower, and those who embrace AI as a tool will thrive in the new era of software development.
The role of developers is evolving to include orchestrating logic, creativity, and intelligence, combining human and artificial elements to build better solutions.
The narrative is shifting towards developers evolving and rising in value alongside AI tools, marking a bold new era of software development.

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Dev

372

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My thoughts on The Odin Project

A new learner shared positive feedback about their experience with The Odin Project, expressing enjoyment in the learning process and gratitude for the resource.
After initially questioning the necessity of learning to code due to advancements in AI tools, the learner realized the importance of understanding coding for UI design and creating aesthetically pleasing apps.
The learner highlighted the significance of learning at least the basics of web design and programming to effectively communicate with AI assistants and bring their ideas to life.
The Odin Project stands out for being a free resource that allows learners to progress at their own pace, starting with foundational concepts and providing ample resources to support the learning process.

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Dev

140

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ELI5: CAP Theorem in System Design

CAP Theorem in System Design states that in a distributed system, you need to choose between consistency (C) or availability (A) when faced with a network partition (P).
In non-distributed systems, CAP Theorem does not apply as you can have both consistency and availability with one database.
Network partitions are inevitable in distributed systems and can lead to either prioritizing consistency (CP) or availability (AP) in system design.
System design examples like Social Media Feed and Flight Booking demonstrate how CAP Theorem is used to make decisions based on prioritizing either availability or consistency.

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Johndcook

372

Structured frameworks for complex systems

The blog post discusses two unrelated topics, one about the math paper H = W and the other about a joke involving D&D alignment matrix.
Grok connected the queries on these topics and mentioned the connection to Sobolev Spaces Query, highlighting efforts to create structured frameworks for complex systems in both math and character ethics.
Although Sobolev spaces and D&D alignment matrix are mathematically unrelated, they both aim to create structured frameworks for complex systems.
The post humorously explores classifying functions into the D&D alignment grid, relating different types of functions to the alignment categories.

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Dev

372

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How to Use Docker Compose and Python to Automate Your Jenkins Environment

The article discusses using Docker Compose and Python to automate the creation of a Jenkins environment.
Docker is highlighted as a tool for consistent environment creation, and Docker Compose is mentioned for orchestrating multi-container applications locally.
Automation is emphasized for reducing errors and saving time, with specific steps automated using Python in the project.
The process involves writing a docker-compose.yml file, creating a Dockerfile for a custom Jenkins image, and using Python script (automate.py) for automation.
Common roadblocks include issues like 'mypy Not Recognized' and 'ModuleNotFoundError: No module named 'docker', with solutions provided.
The article concludes by recommending similar projects for skill enhancement and sharing the GitHub repository link for reference.
The author invites readers to engage by dropping comments or sharing the article with those interested in DevOps.
Hands-on cloud builds, automation tricks, and AWS-focused deep dives are shared by the author on platforms like LinkedIn, Medium, GitHub, and Dev.to.
The article encourages readers to continue learning about DevOps, Docker, and automation for skill improvement.

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Medium

386

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Coming Soon — New Java 1Z0–830 Practice Course

A new Java 1Z0–830 Practice Course is in development with updated scenarios and more practice questions to help master the certification.
The current bestselling Java SE 21 Developer 1Z0–830 Practice Tests course on Udemy is highly recommended for preparation.
Enrolling in the current course can assist in preparing for the Oracle Certified Professional: Java SE 21 Developer exam.
A discount code 'MEMORIALDAY' is available to get the course for $9.9 on Udemy, alongside a special offer on Java Interview books with code 'friends50' for a 50% discount until the weekend.

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Dev

273

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React Performance Optimization: From Slow to Lightning Fast (Complete Guide 2025)

This article serves as a complete guide to optimizing React performance, transforming slow apps into speedy ones.
Performance is crucial, as 53% of users leave sites that take over 3 seconds to load.
Diagnosing performance issues using Chrome DevTools is the initial step to identify slowdowns.
Quick wins like using React.memo(), useMemo(), and useCallback() can improve performance in under 5 minutes.
Advanced optimizations like code splitting with React.lazy() and virtual scrolling are more intricate techniques discussed.
A real-world case study showcases how various optimizations led to a significant load time improvement.
Tools like React DevTools Profiler and Bundle Analyzer are recommended for performance testing.
The article also provides a 7-day performance action plan and bonus tips for further optimization.
Continuous monitoring and implementation of optimization techniques are key for maintaining high React app performance.
Deeper dives into React optimization techniques and real-world examples are suggested for further learning.

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Medium

395

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5 Must-Read Books to Build and Grow Your Wealth

The article highlights five must-read books for building and growing wealth, focusing on practical advice, real-world wisdom, and clear insights.
One recommended book emphasizes the importance of asset-building over just earning income, showcasing the contrast between two father figures' financial approaches.
Another book explores the habits and strategies of everyday millionaires who prioritize saving, wise financial choices, and wealth accumulation.
A wealth creation guide presents a nine-step plan to redefine one's money relationship, advocating for financial freedom and a purpose-driven life.
A simple yet effective book advises on keeping money management uncomplicated, advocating for low-cost index fund investments and consistent wealth-building practices.
Ramit Sethi's book offers practical financial advice with a focus on automation, personalized spending, and guilt-free budgeting, suitable for young individuals and anyone seeking financial order.
These books go beyond financial concepts, emphasizing the significance of mindset shifts, habit formation, and leveraging money to align with personal values.
The article concludes by encouraging readers to select a book that resonates with them, suggesting that wealth-building is a gradual process that begins with absorbing valuable insights and taking action.
Readers are advised to start their financial education journey by delving into the recommended books and applying the principles outlined for long-term wealth growth.
Remember, wealth accumulation is a journey that requires dedication, informed decision-making, and proactive financial management strategies.
Happy Reading! Vaibhav Pasrija

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Dev

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Compare generated tests with Playwright MCP Server and LLMs

Comparison was conducted between Claude 4 Opus, Claude 4 Sonnet, and existing models in terms of code quality, readability, and adherence to Playwright best practices.
GPT-4.1 performed well in code quality by implementing a Page Object Model with nested objects, clear readability, and adherence to Playwright best practices.
Claude 3.7 Sonnet showed good code quality with a structured Page Object Model, clear readability, and adherence to best practices.
Overall, GPT-4.1 and Claude 3.7 Sonnet are recommended for their structured models, modularity, and adherence to best practices, while Deepseek R1 and xAI Grok-3 are better suited for smaller scenarios.
Recommendation against adopting Claude 4 Opus and Claude 4 Sonnet due to comparable performance at higher costs.

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Dev

255

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Innovating Music Social Experiences with Real-Time Beauty Effects

StarMaker, a music social app, has gained global popularity by offering 'K-singing + social' features like voice rooms, live streams, and games.
With 310 million users globally, StarMaker faced performance challenges on low-end devices and diversified user aesthetics.
To optimize beauty effects, StarMaker integrated the Tencent RTC Beauty AR SDK for improved performance and visual quality.
The Tencent RTC SDK streamlined rendering, implemented lightweight makeup modules, and optimized sticker loading for better efficiency.
By choosing AI models based on requirements and using fast-skin-smoothing algorithms, beauty effects processing time on low-end devices was reduced by up to 50%.
StarMaker's success highlights the importance of focusing on user needs and perfecting product features for a seamless music-driven social experience.
To implement AR beautification on websites, developers can follow a guide that includes creating a license, running sample project code, and trying out various filters and effects.
The guide for building a real-time beautification app on the web involves obtaining a license, running a sample project locally, and trying out SDK capabilities for desktop browsers.
Susie, a writer and Media Service Product Manager, collaborates with startups worldwide to create real-time communication solutions using SDK and APIs.
For face filters or special effects integration into apps, interested parties can contact Susie and her team for assistance.

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Medium

121

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Lifespan of Butterflies

Butterflies start their life as small eggs laid by female butterflies on leaves of plants.
Eggs hatch into caterpillars, also known as larvae, which grow in size and strength by feeding on leafy greens.
The caterpillar then forms a chrysalis, where it undergoes a miraculous metamorphosis into a mature butterfly.

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